/Engine/Source/Runtime/AssetRegistry/Public/AssetRegistry/AssetRegistryState.h
Appends a list of packages and searchable names that reference the supplied package or name. (On disk references ONLY)
bool GetReferencers ( const [FAssetIdentifier](API\Runtime\CoreUObject\AssetRegistry\FAssetIdentifier) & AssetIdentifier, [TArray](API\Runtime\Core\Containers\TArray)< [FAssetDependency](API\Runtime\AssetRegistry\AssetRegistry\FAssetDependency) > & OutReferencers, [UE::AssetRegistry::EDependencyCategory](API\Runtime\CoreUObject\Misc\UE__AssetRegistry__EDependencyCa-) Category, const [UE::AssetRegistry::FDependencyQuery](API\Runtime\CoreUObject\Misc\FDependencyQuery) & Flags ) const